std::error_condition

From Cppreference

C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
Utilities library
Error handling
Exception handling exception uncaught_exception exception_ptr (C++11) make_exception_ptr (C++11) current_exception (C++11) rethrow_exception (C++11) nested_exception (C++11) throw_with_nested (C++11) rethrow_if_nested (C++11) Exception handling failures terminate terminate_handler get_terminate (C++11) set_terminate unexpected (deprecated) bad_exception unexpected_handler (deprecated) get_unexpected (C++11)(deprecated) set_unexpected (deprecated) Exception categories logic_error invalid_argument domain_error length_error out_of_range runtime_error range_error overflow_error underflow_error errno facility Error codes errno assertions assert system_error facility error_category (C++11) generic_category (C++11) system_category (C++11) error_condition (C++11) errc (C++11) error_code (C++11) system_error (C++11)
std::error_condition
Member functions error_condition::error_condition error_condition::operator= error_condition::assign error_condition::clear error_condition::value error_condition::category error_condition::message error_condition::operator bool Non-member functions operator< operator== operator!= make_error_condition Helper classes is_error_condition_enum

Defined in header <system_error>
class error_condition;		(since C++11)

std::error_condition is a platform-independent error code. Like std::error_code, it is uniquely identified by an integer value and a std::error_category, but unlike std::error_code, the value is not platform-dependent.

A typical implementation holds one integer data member (the value) and a pointer to an std::error_category.

Contents 1 Member functions 2 Non-member functions 3 Helper classes 4 See also

[edit] Member functions

(constructor)	constructs an error_condition (public member function)
operator=	replaces the contents of an error_condition (public member function)
assign	replaces the contents of an error_condition (public member function)
clear	sets the error_condition to value 0 in generic_category (public member function)
value	obtains the value of the error_condition (public member function)
category	obtains the error_category for this error_condition (public member function)
message	obtains the explanatory string for this error_condition (public member function)
operator bool	checks if the value is non-zero (public member function)

[edit] Non-member functions

operator<	provides ordering for error_conditions (function)
operator== operator!=	compares error_conditions and error_codes (function)
make_error_condition (C++11)	creates an error condition object of specified error_category (function)

[edit] Helper classes

is_error_condition_enum (C++11)	identifies an enumeration as an std::error_condition (class template)

[edit] See also

error_code (C++11)	holds a platform-dependent error code (class)
error_category (C++11)	base class for error categories (class)